The code is client-side and not server-side. You can't use the function in the code-behind. You can however call the function when you postback the page. See message #710745 for an explanation of how to call the function by using the RegisterClientScriptBlock method.

>I wrote a small javascript program in the section of an asp.net page. I want to call the routine from a codebehind program. If I try to run the program, it can't find the method. Here's the code I expected to run:
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>Dim l_retval as string = dispDialog()
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>This works for calling another VB method, but not for a script routine.
>DispDialog is a script routine in the page header. How in the world do I call it?